beautiful forest city, treehouse metropolis concept art, nighttime, illustration, art by inverse diffusion model and greg rutowski and studio ghibli, vivid, colorful, octane render, 3 d, cgi, self aware deep learning, biopunk, solarpunk, sustainability, futurism, fractal, psychedelic, 8 k, global illumination, trending on artstation, biodiversity, foliage, trains, land use